diff options
| author | Mark Brown <broonie@linaro.org> | 2014-05-22 00:17:27 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2014-05-22 00:17:27 +0100 |
| commit | bfbc344732badffe94f096f929e4a105b3b92d1f (patch) | |
| tree | f4fc6c06108495bd2c33ecff68c065514e66a8cc /mm/huge_memory.c | |
| parent | c9eaa447e77efe77b7fa4c953bd62de8297fd6c5 (diff) | |
| parent | c6466950e917890be3050171f6745ccb9d91d35f (diff) | |
Merge tag 'mfd-regulator-v3.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd into regulator-bcm590xxx
Immutable branch between MFD and Regulator due for v3.16 merge-window.
Diffstat (limited to 'mm/huge_memory.c')
| -rw-r--r-- | mm/huge_memory.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 64635f5278ff..b4b1feba6472 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1536,16 +1536,23 @@ pmd_t *page_check_address_pmd(struct page *page, enum page_check_address_pmd_flag flag, spinlock_t **ptl) { + pgd_t *pgd; + pud_t *pud; pmd_t *pmd; if (address & ~HPAGE_PMD_MASK) return NULL; - pmd = mm_find_pmd(mm, address); - if (!pmd) + pgd = pgd_offset(mm, address); + if (!pgd_present(*pgd)) return NULL; + pud = pud_offset(pgd, address); + if (!pud_present(*pud)) + return NULL; + pmd = pmd_offset(pud, address); + *ptl = pmd_lock(mm, pmd); - if (pmd_none(*pmd)) + if (!pmd_present(*pmd)) goto unlock; if (pmd_page(*pmd) != page) goto unlock; |